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DCR254 Schematic ( Datenblatt PDF ) - Compensated Deuices Incorporated

Teilenummer DCR254
Beschreibung CURRENT REGULATOR DIODES
Hersteller Compensated Deuices Incorporated
Logo Compensated Deuices Incorporated Logo 

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DCR254 Datasheet, Funktion
• CURRENT REGULATOR DIODES
• CONSTANT CURRENT OVER WIDE VOLTAGE RANGE
• HIGH SOURCE IMPEDANCE
• METALLURGICALLY BONDED
• DOUBLE PLUG CONSTRUCTION
MAXIMUM RATINGS
Operating Temperature: -65°C to +175°C
Storage Temperature: -65°C to +175°C
DC Power Dissipation: 500 mW @ +50°C @ TL = 3/8”
Power Derating: 4 mW / °C above +50°C
DCR250
thru
DCR257
ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified
TYPE
NUMBER
DCR250
DCR251
DCR252
DCR253
DCR254
DCR255
DCR256
DCR257
REGULATOR CURRENT
l p (mA) @ VS = 25V
(Note 1)
NOM MIN
MAX
5.10 4.59
5.60 5.04
6.20 5.58
6.80 6.12
5.61
6.16
6.82
7.48
7.50
8.20
9.10
10.00
6.75
7.38
8.19
9.00
8.25
9.02
10.01
11.10
MINIMUM
DYNAMIC
IMPEDANCE
@VS = 25V
ZS (K)
(Note 2)
100
90
80
70
50
30
20
10
MINIMUM
KNEE
IMPEDANCE
@VK = 6.0 V
ZK(K)
(Note 3)
4.0
4.0
3.0
2.0
1.5
1.5
1.0
1.0
MAXIMUM
LIMITING
VOLTAGE
@ lL = 0.8 l p (min)
VL (VOLTS)
3.67
4.03
4.46
4.90
5.40
5.90
6.55
7.20
PEAK
OPERATING
VOLTAGE
VOLTS
80
80
70
70
60
60
50
50
NOTE 1
NOTE 2
NOTE 3
Pulse measurement @ 1% duty cycle, 10 milliseconds maximum.
ZS is derived by superimposing A 90Hz RMS signal equal to 10% of VS on VS
ZK is derived by superimposing A 90Hz RMS signal equal to 10% of VK on VK
FIGURE 1
DESIGN DATA
CASE: Hermetically sealed glass case.
DO-7 outline.
LEAD MATERIAL: Copper clad steel.
LEAD FINISH: Tin / Lead
THERMAL RESISTANCE: (ROJEC):
250 ˚C/W maximum at L = .375 inch
THERMAL IMPEDANCE: (ZOJX): 25
˚C/W maximum
POLARITY: Diode to be operated with
the banded (cathode) end negative.
MOUNTING POSITION: Any
22 COREY STREET, MELROSE, MASSACHUSETTS 02176
PHONE (781) 665-1071
FAX (781) 665-7379
WEBSITE: http://www.cdi-diodes.com E-mail: mail@cdi-diodes.com


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